长发及腰是贞子短发及耳是丸子
[zhăng fā jí yāo shì zhēn zi duăn fā jí ĕr shì wán zi]
'Long hair reaches the waist like Sadako; Short hair reaches the earlobe like marbles.' The first half alludes to Sadako Yamamura, the ghost protagonist with very long black hair from Japanese horror series Ring. While '丸子' usually means meatball, here refers to a popular hairstyle among young Chinese, called bun. So it implies two drastically different appearances or transformations.